Add events to notify of IBus connect/disconnect

Change-Id: I1fb68f1840cb10a5517640221d132201c00e8235
Signed-off-by: Eduardo Lima (Etrunko) <eduardo.lima@intel.com>
Fix query for IBus address

Change-Id: I71313ecd1aa330a240cd3fad8636c071f7a6ef8c
Signed-off-by: Eduardo Lima (Etrunko) <eduardo.lima@intel.com>